Device for truing axles



2 Sheets-Sheet 1.

(No Model.)

J. F. THOMAS & W. BAKER.

DEVICE FOR TRUING AXLES. v

Patented Jan.28, 1883.

m PETERS. FhuloLafi-cgr-lpncr. Washington. D1;

(No Model.) 2 Sheets-Sheet 2. J. P. THOMAS & W. BAKER.

, DEVIOB FOR TRUING AXLES. No. 270,916. Patented Jan.23,1888.

UNITED STATES PATENT ()FFICE.

JOHN F. THoMAs AND WALTERBAKER, or ILION, NEW YoRK.

DEVICE FOR TRUING AXLES.

SPECIFICATION forming part of Letters Patent No. 270,916, dated January23, 1883; Application filed July 5, 1882. (No model.) I

- ming and truing axles which have become Lil worn; and it consists in aseries of radially-adj ustable cutters mounted in a stock provided witha cam-plate to adjust the cutters and a centering device to bring thecutters to and retain them in proper position, as hereinafter fully setforth.

In the accompanying drawings, Figure 1 represents a perspective view ofour improved device; Fig. 2, a face view of the same with the cam-plateremoved and turned over to show the cams or ribs, and Fig. 3 alongitudinal vertical section of the deviceapplied to an axle.

Axles by continued use become worn into an elliptical form incross-section, causing an undesirable play and rattling of the wheel anda rounding off of the shoulder or collar of the axle, against which thewheel abuts. It is to restore such worn axles to their original formthat this tool is designed, though it may also be used for truing orreducing new axles. 4

The implement is designed to be manipulated by hand without the aid oflathes or other machinery, and is accordingly construeted as shown inthe drawings, in which A represents a tubular stock or body enlarged atone end and slotted to receive a series of radially-moving cutters, B,which are held in their slots by a cap or face-plate, O, and are movedto or from the center simultaneously by a cam-plate, D, the cams or ribsa of which enter notches or recesses b in the back or unring or collar,E, passed upon the neck of thestock and secured in place by screws (1.This arrangement permits the cam-plate D to turn I freely upon the stockwithout permitting it to leave its seat therein.

The cutters are arranged to slide freely toward and from the center ofthe stock, with whichthey rotate, but, being seatedin grooves or waystherein, can have no other motion independently of the stock when itisdesired to adjust the cutters.

The eccentric ribs or cams a of the cam-plate D being seated in therecesses or notches b of the cutters, it follows that, if the stock beheld fast and the cam-plate rotated, the cutters will be simultaneouslyand equally moved to or from the center, according to the direction ofrotation, and thus adapted to act upon a larger or smaller axle, asrequired.

An arm, 0, is formed upon the cam-plate, by which to rotate it, and aslotted flange or wing, f, is also formed thereon, and arranged toproject past the side of the stock to receive a clamping-bolt, F, oneend of which is seated in a.lug or ear formed upon the stock. When thecam-plate is moved to theproper point the thumb-button G is turned uponthe bolt F until the plate is firmly clamped, and the cutters therebyheld against end movement. The stock is form edwith socket-pieces G toreceive hand bars or levers, by which to rotate it.

For the purpose of centering or supporting the tool or implement upon anaxle, we provide a centering device, H, consisting of three jaws orblocks, h, slotted and carried by a ring. 17, upon which they areradially arranged and free to move in or out. The jaws or blocks h aretapered off at both ends, so that one end may readily enter the end ofthe neck of the stock, and that the other end may similarly enter agroove or channel, j, formed in the inner face of a nut, I, appliedto-the outer end of the axle. By screwing the nut upon the axle more orless the jaws or blocks h will be pressed into the neck of the stock Auntil an equal and firm bearing is given to each, their uniform tapercausing them to be centered and in turn to center the axle, as indicatedin Fig. 3.

The cutters are formed to out both on their ends and inside faces, sothat they are adapted not only to trim and true the'axle or spindleproper, but also to square the collar at the inner end of the spindle.

We are aware that tools have before been made with radiallyadjustablecutters, and this we do not broadly claim.

\Vhile we have spoken of the cutters as being radially arranged andadjustable in radial lines, it should be stated that, strictly speaking,they are not arranged in true radial position, but are placed on linestangential to a small central circle, as seen in Fig. 2, in order tothrow the cutting-edges inward in advance of the inner faces of thecutters. The cutting points or edges, however, move radially, orpractically so.

We are aware that a cam-plate has been employed in connection withnotched cutters mounted in slots or ways in a stock for the purpose ofmoving the cutters in or out; but by our construction we are enabled tosecure the cam-plate in position and to adjust the cutters and causethem to straddle or engage with the cams before applying the face orcovering plate--a feature of considerable importance, because it avoidsthe difficulties commonly experienced in assembling implements of thischaracter, and obviates the necessity of forming openings in said platethrough which-to observe the position of the cutters, and through whichdirt and dust have been found to enter, to the injury of the implement.

Having thus described our invention, what We claim is- 1. In combinationwith an implement, substantially such as described, for truing axles. acentering device adapted to enter the end of the stock and to center theimplement upon the axle.

2. In combination with stock A, a centering device tapered at its ends,and a channeled nut adapted to screw upon the end of the axle and to fitover the end of the centering device, substantially as shown anddescribed.

3. In combination with stock A and hat I, the centering deviceconsisting of the jaws h, mounted loosely upon ring i, as and for thepurpose set forth.

JOHN F. THOMAS. WVALTER BAKER.

Witnesses:

P. D. Oseoon, RICHARD W. JoNEs.

